PRECISION IN SURVEYS BY USE OF PLANE COORDINATES

A SURVEY IS PRESENTED OF THE USE OF PLANE COORDINATE SYSTEMS. IT IS CONCLUDED THAT THE USE OF THE SYSTEM OF STATE PLANE COORDINATES WITHIN EACH STATE, BY MAKING AN APPROPRIATE ADJUSTMENT OF THE DATUM ON A ZONE OR AREA BASIS, IS VITAL TO ACCOMPLISHING PRECISION MAPPING, HIGHWAY DESIGN, AND LOCATION AND CADASTRAL SURVEYING, AND TO ACHIEVING SIMILARITY BETWEEN DISTANCES DETERMINED FROM COORDINATES OF BASIC CONTROL POINTS ON THE ADJUSTED DATUM AND DISTANCES MEASURED ON THE GROUND BETWEEN SUCH POINTS AND BETWEEN THEM AND ALL HIGHWAY AND CADASTRAL SURVEY POINTS. ADOPTION AND USE OF STATE PLANE COORDINATES ON AN ADJUSTED DATUM DETERMINED BY A THOROUGH ANALYSIS OF THE TOPOGRAPHY OF EACH STATE ON AN AREA BASIS MAKES IT POSSIBLE TO TAKE ADVANTAGE OF THE NUMEROUS BENEFITS PROVIDED BY THE STATE PLANE COORDINATE SYSTEM, WHICH INCLUDES: (1) ACHIEVING THE CORRELATION AND CONTINUITY DESIRABLE BETWEEN INDEPENDENT SURVEYS, (2) MAKING EASY THE PRECISE COMPUTATION AND ACCURATE STAKING OF SPECIFIC POINTS OF ENGINEERING FACILITIES AND PROPERTY BOUNDARIES, (3) OBVIATING THE NEED FOR REMEASURING OR LOOP CLOSING TRAVERSES AND TRIANGULATION NETS TO DETERMINE THEIR ACCURACY, (4) EXPRESSING POSITIONS, DISTANCES, AND BEARINGS IN EASILY UNDERSTOOD AND USED FORMS, (5) INCREASING THE DENSITY OF CONTROL POINTS AND DECREASING THE DISTANCE BETWEEN THEM WHENEVER A SURVEY IS PRESERVED BY PLACEMENT OF ADEQUATELY DURABLE MARKERS AT EACH SIGNIFICANT STATION OF A TRAVERSE OR TRIANGULATION SURVEY OR COMBINATION THEREOF, AND (6) KNOWING THE X AND Y COORDINATES OF NUMEROUS POINTS SET AND SURVEYED FOR ENGINEERING AND CADASTRAL PURPOSES, AND HAVING THEM READILY AVAILABLE AS RELIABLE AND PRECISE ORIGIN AND CLOSURE STATION MARKERS.

Media Info

  • Media Type: Print
  • Features: Figures; Tables;
  • Pagination: pp 51-81
  • Monograph Title: Photogrammetry and aerial surveys
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202724
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Oct 14 1994 12:00AM